JEE Main questions
34495 published questions with worked solutions.
- Correct formula for height of a satellite from earths surface is:
- Given below are two statements: Statement I: The contact angle between a solid and a liquid is a property of the material of the...
- An electric bulb rated 50 W – 200 V is connected across a 100 V supply. The power dissipation of the bulb is:
- A 2 kg brick begins to slide over a surface which is inclined at an angle of 45° with respect to horizontal axis. The...
- In simple harmonic motion, the total mechanical energy of given system is E. If mass of oscillating particle P is doubled then...
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Number of...
- A sample of gas at temperature T is adiabatically expanded to double its volume. Adiabatic constant for the gas is γ = 3/2. The...
- Applying the principle of homogeneity of dimensions, determine which one is correct. where T is time period, G is gravitational...
- A 90 kg body placed at 2R distance from surface of earth experiences gravitational pull of: (R = Radius of earth, g = 10 ms^ -2 )
- The displacement of a particle executing SHM is given by x = 10 ( t + 3 ) m. The time period of motion is 3.14 s. The velocity of...
- A bus moving along a straight highway with speed of 72 km/h is brought to halt within 4s after applying the brakes. The distance...
- A parallel plate capacitor of capacitance 12.5 pF is charged by a battery connected between its plates to potential difference of...
- In a system two particles of masses m_1 = 3kg and m_2 = 2kg are placed at certain distance from each other. The particle of mass...
- The disintegration energy Q for the nuclear fission of ^ 235 U → ^ 140 Ce + ^ 94 Zr + n is ____MeV. Given atomic masses of ^ 235...
- A light ray is incident on a glass slab of thickness 4 3 cm and refractive index 2. The angle of incidence is equal to the...
- A rod of length 60 cm rotates with a uniform angular velocity 20 rad s^ -1 about its perpendicular bisector, in a uniform...
- Mercury is filled in a tube of radius 2 cm up to a height of 30 cm. The force exerted by mercury on the bottom of the tube is...
- The equilibrium constant for the reaction SO_3(g) ⇌ SO_2(g) + 12O_2(g) is K_C = 4.9 × 10^ -2 . The value of K_C for the reaction...
- The correct statement/s about Hydrogen bonding is/are: A. Hydrogen bonding exists when H is covalently bonded to the highly...
- Common name of Benzene-1, 2-diol is